thomson



(No Model.) 2 Sheets-Sheet 1.

- P. W. THOMSON.

MACHINE FOB. PULVERIZING QUARTZ. No. 554,802. Patented Feb. 18, 1896.

(N0 Model.) Y 1 I. W. THOMSON.

2 Sheets-Sheet 2.

MACHINE FOR PULVERIZING QUARTZ. No. 554,802. Patented Feb. 18, 1896.

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MACHINE FOR PULVERIZING QUARTZ.

SPECIFICATION forming part of Letters Patent No. 554,802, dated February18, 1896. Application filed March 28, 1895. Serial'No. 543,496. (Nomodel.)

To all whom, it may concern.-

Be it known that I, FREDRIOKWILLIAM THOMSON, a subject of the Queen ofGreat Britain,residing at Fort WVilliam, in the Thunder Bay District andProvince of Ontario, Canada, have invented a new and useful Machine forPulverizing Quartz, of which the following is a specification.

This invention relates to an improvement in machines for pulverizingquartz, and the primary object of the invention is to construct it insuch manner that the different parts of the machine shall be capable ofbeing easily separated and removed, renewed and reassembled, which shallbe simple in construction, durable in practice, and thoroughly effectivein operation.

My invention consists in the combination, with a hollow cylindricalcentrally-arranged support, of a series of rolls each independentlymounted within and between two parallel rings or hoops arranged onopposite sides of said central support, a hollow drum surrounding saidseries of rolls and the hollow central support, a detachable circularcover for closing one side of said drum, a circular screen arranged onthe opposite side of the drum, and a central supportingshaft forsteadying the drum, and in certain features and details of constructionand arrangement of parts hereinafter fully described, and pointed out inthe claims;

In the accompanying drawings, Figure l is a perspective view of myimproved machine for pulverizing quartz, &c., with the hood or splasherpartly broken away to show the interior construction. Fig. 2 is asimilarview of the hollow cylindrical central support, the circularseriesof rolls surrounding the same, and the circular frames forholding, guiding, and controlling the rolls. Fig. 3 is a verticaltransverse section through the machine, showing the relation of partsand illustrating the manner in which the wearing-shoes are held inplace, also showing the manner in which the drum is supported. Fig. 4 isa vertical longitudinal section through the same;

Similar numerals of reference indicate corresponding parts in theseveral figures of the drawings.

Referring to the drawings, 1 indicates the hollow cylindricalcentrally-arranged support v of my improved quartz-pulverizer. Thecentral support 1 is rigidly attached to a pedestal or post 2, arrangedexteriorly of the machine. The upper end of the pedestal or post 2 isbifurcated or provided with two arms 3 3, from which stout rods or barsextend into the interior of the machine, connecting with and supportingthe hollow central support 1 in fixed position. The pedestal 2 isprovided at its base with flanges 4, adapting the same to be securedfirmly to and upon a suitable platform. Between the arms 3 3 at theupper end of the pedestal 2 a concavity or rest 5 is provided for thereception of the main supporting-shaft, hereinafter described.

6 6 indicate two circular frames or rings surrounding the centralsupport 1 and located approximately in the plane of the side faces 0redges of said central support 1.

7 7 indicate a series of rolls arranged in a circle around thecylinder 1. These rolls 7 are mounted on and adapted to turn aroundnon-revoluble pins orbolts 8 passing through the circular frames 6 6,said bolts being pro vided with countersunk heads at one end and at theopposite end being perforated and adapted to receive a split pin,cotter, or wedge 10, either with or without a washer 9, as preferred,and as indicated in Fig. 3.

11 indicates'a drum surrounding the rolls 7 and adapted to revolve uponand receive its support from said rolls, the rolls in turn beingsupported on the central cylinder 1. The drum 11 is provided on one sidewith a removable disk secured at its outer periphery tothe side edge ofthe periphery of the drum 11 by means of tap-screws 13, passingthroughperforations in said disk 12, and entering threaded sockets in the drum.The disk 12 is provided with a central hub and perforation 14, by meansof which said disk or cover is keyed to a shaft 15 at one end, saidshaft passing centrally through the machine and having a bearing at itsopposite end in a pedestal 16 arranged on the same side of the machineas the pedestal 2. On either side of the bearing 17 in which said shaftis journaled, collars 18 surround said shaft, being secured thereto bymeans of a set-screw 19 in each collar. Intermediate its ends said shaft15 is adapted to rest within the fork of the pedestal 2 betweenthe arms3 3 thereof,

and just above the base of the concavity 5, and said shaft by means ofits connection with the disk or cover 12 supports the drum 11 againstlateral movement. The base of the pedestal 16 is formed in one piecewith the base i of the pedestal 2, both pedestals and their common basebeing preferably cast together.

The side of the drum 11. opposite to that on which disk 12 is located isleft open with the exception of an inwardly-extending flange 20, formedintegrally with the drum 1], and 11 rojeetin g inwardly a few inchesfrom the inner periphery of said drum.

21 indicates a circular screen, such as is used in stamp-mills, attachedat its outer periphery to the flange 20, and having a large centralopening through which the quartz or other material to be pulverizedisintroduced into the machine. A ilange 22 formed integrally with theflange 90 extends outwardly from the latter and is given an outwardflare, as indicated in Fig. 3. A circular hood or splasher 23 is locatedjust outside of the annular flange 22, and is bent inwardly at its outerperiphery, as shown at 2 L, to form an inwardly-extending flange, whichis adapted to surround and partially cover the annular flange 22. Thehood or splasher 23 is provided with a central aperture 25, and issupported in fixed position bymeans of suitable straps or bars 26striding the stationary rods which support the stationary hollowcylinder 1, though said hood or splasher maybe supported and held inplace in any convenient or desired manner.

27 indicates an annular shoe of slightly less diameter externally thanthe internal diameter of the drum 1], being held in place by means ofsuitable wedges 28. The shoe 27 is made of sullicient width to extendpractically across the inner periphery of the drum 11 from the innerface of the flange 20 to the corresponding faee of the disk or cover 12and constitutes the main grinding-shoe of the ma chine. A similar shoe29 of a smaller diameter surrounds the stationary central hollowcylinder 1, and is also secured in place thereon by means of wedges 30.\Vhen the shoes or wearing-plates 27 and 29 become worn, they can beremoved by taking off the cover or disk 12, and a new set of shoes maythus be applied when desired or found necessary. In like manner therolls 7 may be removed by withdrawing the wedges or cotters 10, washers.l, and one of the circular frames or plates (3, and a new set ofrollsbe substituted when the first set of rolls is too badly worn to beof further use.

31 indicates a hopper or chute into which the quartz or other materialis placed, the inner end or mouth of said hopper or chute pro j ectingwithin the hood or splasher 23, and the screen 21 for delivering thematerial to be pulverized to the interior of the hollowsupporting-cylinder 1. The quartz or other material falls throughvertically-aligned apertures 31, in the bottom of thesupporting-cylinder 1 and its shoe to the bottom of the drum 11 and uponthe shoe 27, and when said drum is revolved by means of a belt 332surrounding the drum, from any suitable motor, the quartz will becarried around by said drum passing beneath the rolls or between saidrolls and the shoe 37, thereby crushing and pulverizin the same. Thedrum is ordinarily revolved at high speed and the material is carriedupward and around by the action of the revolving-drum and rolls andfinely pulverized and ground between the same. \Vhen the drum revolvesslowly the material as it reaches the top of the machine falls betweenthe rolls and upon the shoe 2!), upon which it is further pulverized inits downward passage to the bottom of the machine, water beingintroduced to the interior of the drum by means of a pipe or hose. (Notshown.) \Vhen the material is pulverized to a sui'lieient extent-,it iscarried by said water through the screen 21 and escaping between theannular flange 22 and the curved or hooked periphery 24: of the hood orsplasher falls into a suitable trough or conveyer 33, by which it isconveyed to the copper plates or concentrator.

The hopper 231 may be supported on the st :1- tionary-frame in anyconvenient manner, and rotary motion may be communicated to the drum 11in any usual or desired manner. The rolls are made from cast-iron andthe central perforations therein are formed in the process of casting.The bolts 8, which hold. said. rolls in place, are made eonsiderabl ysmaller in diameter than the internal diameter of -the here orperforation in the rolls. The pins 8 thus serve to keep the rolls apartand in their proper position, at the same time adapting them to rise andfall and accommodate themselves to the material. OjOlittOtl upon and tocompensate for wear in the shoes 27 and 30 or in the rolls themselves.\Vhen the shoes and rolls become too badly worn or too greatly reducedin size, they may be removed from the machine by taking oil the disk orcover 12. A new set of shoes and rolls may now be introduced and thedisk or cover 12 replaced, when the machine is again ready foroperation.

Various changes in the form, )roportion, and the minor details ofconstruction maybe resorted to without departing from the principle orsacrificing any of the advantages of this invention.

Having thus described my invention, what I claim is 1. I11 a machine forpulverizing quartz, astationary cylinder, a series of rolls travelingaround said stationary cylinder, a suitable frame for regulating thedistance between the rolls and controllin g their movements, and a drumsurround ing said rolls, and means substantially as described forrevolving said drum.

2. Ina machine for pulverizing quartz, a stationary hollow cylindricalsupport, a series of rolls traveling around the same and held in placeby means of a suitable revolving frame, a revolving drum surroundingsaid rolls, and a centrally-arranged shaft for said drum, said shaftpassing through said hollow cylindrical support and having the drumkeyed thereto, substantially as described.

3, In a machine for pulverizing quartz, a stationary hollow cylindricalsupport, a series of rolls traveling around the same, and supportedthereby, an annular frame in which said rolls are mounted, a revolvingdrum surrounding said rolls and stationary support, and acentrally-arranged shaft keyed within said drum, and mounted in bearingsupon one side of the machine, and means substantially as described forpreventing endwise movement of said shaft, for the purpose andsubstantially as described.

4. In a machine for pulverizing quartz, a stationary hollow cylindricalsupport, a series of rolls traveling around the same, an annular framefor controlling the relative position of said rolls, and a revolvingdrum surrounding and resting upon and supported by said rolls, incombination with a detachable disk or cover secured to said drum forgiving access to the interior of the machine, substantially asdescribed.

annular frame for holding said rolls in place, a rotary drum surroundingsaid rolls, an internally-arranged shoe secured to said drum, and meanssubstantially as described for holding said drum in position laterally,as specified.

7. In a machine for pulverizing quartz, a stationary hollow cylindricalsupport rigidly connected with and in combination with a supportingpedestal, a series of rolls traveling around said hollow cylindricalsupport, a rotary drum surrounding said rolls, a centrally-perforatedend disk secured upon one side of said drum, a centrally-arranged shaftpassing through said hollow cylindrical support, and a pedestal forsupporting said shaft at one end, the opposite end of said shaft beingkeyed to the end disk of said rotary drum, all arranged substantially asand for the pur pose specified.

8. In a machine for pulverizing quartz, a stationary hollow cylindricalsupport, and the pedestal upon which said cylindrical support ismounted, provided with the upper bifurcated end and central concavity asdescribed, in combination with a series of rolls traveling around saidhollow support, a rotary drum surrounding said rolls, and a centrally-arranged shaft connected at one end to said drum through the medium ofthe end disk thereof and mounted at its other end in a pedestal andlocated intermediate its ends within the bifurcation or concavity at theupper end of the main supporting pedestal, substantially as and for thepurpose described. In testimony that I claim the foregoing as my own Ihave hereto affixed my signature in the presence of two witnesses.

FREDRIOK WILLIAM THOMSON. Witnesses:

B. S. FERTHEDGE, W. W. RUssELL.

